CTRE is an Iowa State University center, administered by the Institute for Transportation.

Address: 2711 S. Loop Drive, Suite 4700, Ames, IA 50010-8664

Phone: 515-294-8103
FAX: 515-294-0467

Website: www.ctre.iastate.edu/

Iowa State University--Becoming the Best

Deicer Scaling Resistance of Concrete Mixtures Containing Slag Cement


Principal investigators:

Co-principal investigator:

Project status


Start date: 04/15/10
End date: 03/31/14


Report: Deicer Scaling Resistance of Concrete Mixtures Containing Slag Cement (514.95 kb pdf) January 2014


Sponsor(s): Federal Highway Administration Transportation Pooled Fund

About the research


Concern has been expressed about the deicer scaling resistance of concrete containing slag, especially when the dosage of slag exceeds 50% of the total cementitious material in the mixture. Much of the concern appears to be based on the results of laboratory scaling tests based on ASTM C 672, despite indications that such mixtures often perform well in the field.

The initial phase of this study showed that construction-related issues played a bigger role in the observed scaling performance than did the amount of slag in the concrete mixture. The work also indicated that the test method (ASTM C 672) may be more severe than most environments. A second phase developed an alternative laboratory test method to ASTM C 672 that would better represent the field performance of concretes, based on a method from the Canadian Quebec Ministry of Transportation.

The work described in this report was to repeat some tests using similar materials in a second laboratory to evaluate repeatability of the test methods.